The number of electrons with \( (\mathrm{n}+l) \geq 4 \) and \( \mathrm{S}=+\frac{1}{2} \) in th...

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The number of electrons with \( (\mathrm{n}+l) \geq 4 \) and \( \mathrm{S}=+\frac{1}{2} \) in the atom of chromium in ground state.
(A) 5
(B) 6
(C) 9
(D) 12
\( P \)
W.
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